Publication Abstracts

Rao et al. 2020

Rao, M.P., E.R. Cook, B.I. Cook, R.D. D'Arrigo, J.G. Palmer, U. Lall, C.A. Woodhouse, B.M. Buckley, M. Uriarte, D.A. Bishop, J. Jian, and P.J. Webster, 2020: Seven centuries of reconstructed Brahmaputra River discharge demonstrate underestimated high discharge and flood hazard frequency. Nat. Commun., 11, no. 1, 6017, doi:10.1038/s41467-020-19795-6.

The lower Brahmaputra River in Bangladesh and Northeast India often floods during the monsoon season, with catastrophic consequences for people throughout the region. While most climate models predict an intensified monsoon and increase in flood risk with warming, robust baseline estimates of natural climate variability in the basin are limited by the short observational record. Here we use a new seven-century (1309-2004 C.E) tree-ring reconstruction of monsoon season Brahmaputra discharge to demonstrate that the early instrumental period (1956-1986 C.E.) ranks amongst the driest of the past seven centuries (13th percentile). Further, flood hazard inferred from the recurrence frequency of high discharge years is severely underestimated by 24-38% in the instrumental record compared to previous centuries and climate model projections. A focus on only recent observations will therefore be insufficient to accurately characterise flood hazard risk in the region, both in the context of natural variability and climate change.

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BibTeX Citation

@article{ra02010y,
  author={Rao, M. P. and Cook, E. R. and Cook, B. I. and D'Arrigo, R. D. and Palmer, J. G. and Lall, U. and Woodhouse, C. A. and Buckley, B. M. and Uriarte, M. and Bishop, D. A. and Jian, J. and Webster, P. J.},
  title={Seven centuries of reconstructed Brahmaputra River discharge demonstrate underestimated high discharge and flood hazard frequency},
  year={2020},
  journal={Nat. Commun.},
  volume={11},
  number={1},
  pages={6017},
  doi={10.1038/s41467-020-19795-6},
}

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RIS Citation

TY  - JOUR
ID  - ra02010y
AU  - Rao, M. P.
AU  - Cook, E. R.
AU  - Cook, B. I.
AU  - D'Arrigo, R. D.
AU  - Palmer, J. G.
AU  - Lall, U.
AU  - Woodhouse, C. A.
AU  - Buckley, B. M.
AU  - Uriarte, M.
AU  - Bishop, D. A.
AU  - Jian, J.
AU  - Webster, P. J.
PY  - 2020
TI  - Seven centuries of reconstructed Brahmaputra River discharge demonstrate underestimated high discharge and flood hazard frequency
JA  - Nat. Commun.
VL  - 11
IS  - 1
SP  - 6017
DO  - 10.1038/s41467-020-19795-6
ER  -

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